Attached is a photo of some engine oilers/oil cups i have dug up over the past 20 years while metal detecting an old abandoned LS&MS Ry. line here in Northern Ohio.Some still had a oily residue inside.I have found 2 others identical to the large one on the far left.One had a broken hinged lid and the other one had the threaded bottom broke off.And one other different large oiler from another abandoned B&O line that was badly deteriorated.In front of the oilers in the photo are some brass threaded plugs and caps.In the center is a brass threaded top cap pc. to a oiler just like it above in the photo.